4-Ethyl-2-methylthiophen-3-amine CAS 87675-31-8
| CAS No. | 87675-31-8 |
| Molecular Formula | C7H11NS |
| Molecular Weight | 141.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
4-Ethyl-2-methylthiophen-3-amine (CAS 87675-31-8), molecular formula C7H11NS and molecular weight 141.23 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Ethyl-2-methylthiophen-3-amine (C7H11NS) contains a nitrile group, sulfur-containing functionality. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 141.23 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H11NS |
| Molecular Weight | 141.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 2-(4-Methylthiophen-2-yl)ethan-1-amine (CAS 1176416-35-5)
- (S)-1-(5-Methylthiophen-2-yl)ethan-1-amine (CAS 1213456-85-9)
- 2-(3-Methylthiophen-2-yl)ethan-1-amine (CAS 125140-63-8)
- 1-(5-Methylthiophen-3-yl)ethan-1-amine (CAS 1270528-41-0)
- 2-(4-Methylthiophen-3-yl)ethan-1-amine (CAS 1281560-23-3)
- 1-(5-Methylthiophen-2-yl)ethan-1-amine (CAS 603951-41-3)
- 2-(2-Methylthiophen-3-yl)ethanamine (CAS 912769-60-9)
- 2-Ethyl-4-methylthiophen-3-amine (CAS 87675-36-3)
Recommended Standards
- 3,4,5-Trimethylthiophen-2-amine (CAS 939373-95-2)
- 5-Methyl-4-propylisothiazole (CAS 60230-87-7)
- 3-(2-Thienyl)-1-propylamine (CAS 6007-90-5)
- 6-isothiocyanatohex-1-ene (CAS 49776-81-0)
- tert-Butyl 3-(mercaptomethyl)pyrrolidine-1-carboxylate (CAS 141699-70-9)
- 2-(4,5-Diphenyl-1H-imidazol-1-yl)propanoic acid (CAS 68341-89-9)
- (3,4-Dimethoxybenzyl)triphenylphosphonium Bromide (CAS 70219-09-9)
- 2-Bromo-N-(4-phenylbutyl)benzamide (CAS 332408-69-2)
- Cefazolin-13C2，15N Sodium Salt (CAS CATO-CCAD301967)
- 2-Methyl-1-(2-methylpiperazin-1-yl)propan-1-one (CAS 1240565-73-4)
- 3-(Morpholine-4-carbonyl)-1-(4-(trifluoromethyl)benzyl)pyridin-2(1H)-one (CAS 338782-23-3)
- 3-Amino-1-(pyridin-4-ylmethyl)pyridin-2(1h)-one (CAS 1250140-50-1)
- 2-Iodo-3,4-dimethoxybenzaldehyde (CAS 138490-95-6)
- Peptide Impurity 26 (CAS 1350456-66-4)
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